Fastener



ramen Aug. i4, ieee.

i h if fl .rie

FRED S. CARR, O1 NE'WTQN, MASSACHUSETTS, .ASSIGNGR TO (MER/TEL`FAST:[*IlllElf COMPANY, F CAlVvIBB/JIDGE, MASSACHUSETTS, A CORPORATIONOF Ii/lAIlJ'llE.`

To all `whom t may con-cern: l -f y Beit known that l, FRED S. CARR, aciti- Zen of the United States, and a resident of Y Newton, in theVcounty 4of Middlesex and 5 Commonwealth of Massachusetts, have in-'ventedV an Vl'inprovement in Fasteners," of which' the followingdescription, in .connection with the 'accompanying drawings,is aspecification, like characters on the drawings representing likev parts;Y

This invention pertains to improvements inseparable fasteners. lt isamong the ob jects of the inventionvto provide a fastener of simple andruggedV construction and which provides satisfactory holding power. AInthe drawings, which show a preferred form of oneillustrative embodimentof my invention e yFigure 1 is an elevation of the studand socket of afastener, the stud and socket being carried by their 'respectivefabrics; f

F ig. 2 is a section on the line 2-2 of lig.A l; and v i Figs. 8' and 4are plan views of thev preferred forms of stud and socket secured totheir carrying fabric. 4

V.liteferring to Vthedraw ings, and to the preferred form o-f myinvent-ion selected for l.

Villustrative'V purposes, I have shown a Stud 3o `which may be of usual`construction and includes a head 5, neck Gand base flange 7, stitchedto the stud carrying fabric 8. Cooperating withthis stud l have shown aVsocket 9, wh'lchfin the preferred form of my invention is made from a.singleV piece of sheet'metal having a stuclmeceiving aperture l()therein vand which is slotted at one side to permit resilient expansionof the sheet metal to 'enlarge'. the stud-receiving apen ture forpassage of Ythe head of the stud therethrough. preferably,asillustrated, provide meansl for'liinitingthe resilient eX- pansion ofthespring, and in-the embodivment of my invention illustrated lefect thisbyinaking theslot in the' socket present opposed faces l1 and l2 havinga Vspace 18 be tween them, the extent of this space limiting theresilientexpansion of the sheet `metal to enlarge the stud-receivingaperture. These facesll and 12 may conveniently be formed by making theslot crooked `and I have found that the shaped slot illustrated performsthis function satisfactorily, the central portion of the Z beingpreferably, as illustrated, lwider than the end portions thereof. Where1 ti'on'toward the slit inthe socket.

Fnsruniia.

Application led March 8, 1921i Serial No. 450,746.

my invention is used withxthe one-piece` socket' as illustrated, thespring portion being in fact the entire socket, l .may providestitch-receiving apertures l", 16 and 17 `through the socket,Y thesestitch-receiving apertures preferably .being arranged about thestud-receivingapertureon those sides thereof .which are out of thedirect line of strainbetween Stud and socket when in use, that sideofthe socket presenting 4the slot preferably being arranged toward theline,

Vofstrain and the stitch-receiving apertures preferably being threeinnumber and syminetrically disposed about the other three sides of thestud-receiving aperture or openlng;

The holding.V power ofthe fastener under lateralfs'train may, ifdesired, be increased 'by providing a notch 18 in the sheet metalspring, preferably on that side thereof toward the slot therein whichextends from the stud-receiving aperture to the periphery of 4.thesocket. The resiliency of the socket may be increased by slottingtheinetal between thev stud-receiving` aperture and the stitchreceivingapertures, these slots being numbered 20 on the drawing. i i

`When the stud and socket are attached to their respective fabrics'andwhen these fabrics are pulled apart insuch a way as to produce lateralstrain between stud and socket in the direction of the arrow in Fig. ofthe drawings, the strain may be so great as to' enlargelsomewhat thestud-receiving aperture, but this cannot be `enlarged beyond apredetermined amount because of the limiting means limiting .thisexpansion, and

the expansion will not be sufficient to permit the head of the stud totip out of the studreceiving opening `inthe socket, especially where anotch is provided permitting limited lateral displacementv of the studin a direc- The notch 18 is, however, not sufliciently great tointerfere with ready separation of the stud from 'the socketwhenseparating force is applied between the engaged parts at an anglegreater than that which is likely to be pro-V duced by the resolution offorces arising from lateral strain between stud and socket.

llVhile I have shown and described a preferred form of one embodiment ofmy invention, it Awill be understood that changes involving` omission,substitutions, alteration and reversal of parts, and even changes in thefile lefof operation, may out departing from the seo-pe of my inven-'tipnmvvhichis best defined in the following l. A socket for aseparablefastener, comprising a resilient element having a stud-re#eeiving aperture ther.ein. sai ;l,X resilient` elex. ment discontinuousat one side to permit resilient enlargement .of the stud-receivingaperture, Vand said resilient elementproviding inter-'loekin partslimitingthe vextent of 'enlargement ot the studreceiving aperture. i 2;.A socket for .a separable fasteneiinleludiiig. a springfiforinedoi".slieet metal havingastud-reeeiving aperturetherein7 saidAspring'slotted-aft one. side, the` slot .being .crooked to. providefaeesnvhieh'engageto` limit. theextentoii spreadingl ot the springwheniundeitstrain. e

3. Asoeket. for separable fasteners formed lona .single-piece of sheetinetaL having.

`.stud-receiving aperture therein, said 1 sheet meta-l slottediatOneside ltrom itslperipliery to the aperture therein, the slotpresenting .opposedsiaces having a spaeibetweenthem, `theexteiitof such.space limiting resilient eX- .pansionl of thefsheetm'etal to enlarge thestudlreceiving aperture.. A

4.-. Aisinglepieee socket toirseparahle .fas-l -`.teners presenting astudfreeeiving ,aperture saidfsoelietzresilient to permit expansion foVrthe .aperture tofa predetermined;,limit op- A posed by. the`resiliency of the soelret..only,

l and 1. said-.socket presenting limiting` means for opposing furtherexpansiono't' the aperturevvhen. the predetermined limit has beenreached;

g 5., A. single. piece. slieetymetal.sockeufor separable fastenersPresenting ra stud-receiv- .ing aperture, said soeketresilient to per--.m1texpansion ol theaperture .to n.fpledelimit has been` reached.V

vtermined limit opposed-l by the resliencyl .O the socket. only, andsaid socketV presenting limiting means `for opposing further eiipan-Vsion- 'of the` aperture `when the Vprecle'terniined Asheet metal springfor apseparable 'fastener presenting a stud-reeeiving aperture andhaving 4a slot extending from s 'aid apertureto the periphery .of thespring, said slot presenting Walls. having portions 11, 12 therein,saidportions spaced apa-rt, the. spaefr .ing therebetween determiningthe Vlimit of i'ree-,expansibility of the spring.

'YQ sheet metal spring for `a .separable fastener presenting'astudreeeiving aper ture and havinga slot extending romsaid aperture tothe periphery ot' the s y' said slot Z-shapedzandWider-at "theee'ntrzl7portion of the'Z than at 'the end portions thereof.

8. A soeketioiseparable fasteners ineluding a resilient pait having astud-receiving aperture therethrough, and Lslit or slot .from theaperture to tlifewperiphery. of the riiesilient part,` .said slit orslotZ -s h aped and permitting. While limiting expansion of said ,prising asheet metal piene havinga studreeeiving aperture therethrough'1 .stitehie- .ceiving apertures therethrough anch slitexf tending from saidaperturetothe periphery ot `,the piece at one side,@said@sloteroolretlto .provide surfaces limitii'ig expansion et said for separablefasteners oomtending from said aperture to theV .ofthe pieeeat one sigleof said .'aperture, `Said Slotreokedto nrOYClesni-,facesliniting Lexpansion.. loi'j yseidf studreeeiving iaperti'nie,

.and .sa-id. stitclrreceiving ceiving aperture. f., .K

receiving. apertureherethreiielis vs biftcllfrejeeivingapertui'estherethrough 1and-a slit-Lextending from said aperture .tQL theperiphery Aof the piece at oneside of .s aid aperture,

said slot Y`crooked` to proyide surtaceslimitpertures `grouped about theother threesidesot seid stud-re arable aetenrsenin eXansionofsaid,stud-receivino'ia lerture, saidv piece slotted betweensaidV s `lof said'spring.` l

l. In testimony signed nameto this speeifieation. w i .i FRED S.- GARRlioY

